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1、南方農(nóng)業(yè)學(xué)報(bào)201l，42(1)：26-29JournalofSouthernAgriculture不同施氮方式對(duì)甘蔗生理生化性狀的影響藍(lán)立斌，陳超君，米超，羅藝，梁和’，王愛(ài)華，韋玉奇(廣西大學(xué)農(nóng)學(xué)院．南寧530005)摘要：【目的】探討不同氮肥施用方式對(duì)甘蔗若干生理生化性狀的影響?！痉椒ā恳孕屡_(tái)糖22號(hào)(ROC22)為試驗(yàn)材料，設(shè)(T1)不施氮肥，(他)氮肥作基肥一次性施用，(，13)氮肥分摹肥和分蘗肥施用，(T4)氮肥分基肥、分蘗肥和攻莖肥施用，比較不同施氮方式對(duì)甘蔗葉片若干生理生化性狀的
2、影響?！窘Y(jié)果】氮肥僅作基肥一次性施用的甘蔗葉片葉綠素含量、可溶性蛋白質(zhì)含量、硝酸還原酶活性及根系活力在甘蔗苗期均較高，但到了生長(zhǎng)中后期均較低；而氮肥按基肥、分蘗肥、攻莖hE3次施用時(shí)，在甘蔗生長(zhǎng)中期及后期的上述各項(xiàng)生理生化指標(biāo)均較高。【結(jié)論】甘蔗氮肥施用按基肥、分蘗肥、攻莖肥分3次施用對(duì)甘蔗生理生化性狀有積極的影響，能持久保持較強(qiáng)的生理優(yōu)勢(shì)。關(guān)鍵詞：甘蔗；施氮方式；生理生化性狀中圖分類(lèi)號(hào)：S566．101文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：2095一1191(2011)01-0026—04Effectofd
3、ifferentapplicationmethodsofnitrogenfertilizeronl●_●l-_‘■S0mephysio-biochemicalparametersInsuRarcaneLANLi—bin，CHENChao-jun，MIChao，LUOYi，LIANGHe‘，WANGAi—hua，WEIYu-qi(AgriculturalCollege，GuangxiUniversity，Nanning530005，China)Abstract：【ObjectiveJTheobje
4、ctiveofthepresentstudyWaStoinvestigatetheeffectofdifferentapplicationmethodsofnitrogen(岱N)fertilizeronsomephysiologicalandbiochemicalparametersinsugarcane．【Method】Theplantsofsugar-canevarietyROC22wereculturedinsoil-potculture．Thetotalamountofnitrogen
5、fertilizer(5g／pot)w踮keptasbasicfer-tilizertreatmentexcepttheT1，wherenofertilizerhasbeengiventotheplants．Theotherthreetreatmentswere：5g／potatstage(T2)，2．5g／potbasicfertilizer+2．5g／pottiUeringfertilizer(T3)，1．5g／potbaslefertilizer+1．5g／pottilleringfert
6、iliz-er+2．0g／potelongationfertilizer(T4)．Thechlorophyllandsolubleproteincontents。nitratereductaseactivityandrootactivitywereinvestigatedatdifferentstages．【Result】Theanalyzedparametersdifferedsignificantlyinplantstreatedwithdifferenttreatments．InT2。al
7、ltheparametersincreasedsignificantlyatseedlingstage，whileadecreaseinall嘲oh-servedattilleringandelongationstage．InT4，alltheparameterswerefoundtobesignificantlyhigheratbeth．thetiUeringandtheelongationstages．【Conclusion】Applyingnitrogenfertilizerinthree
8、sphts，eachatseedling，tiUeringandelongnt·ingstagessignificantlyimprovedthechlorophyllandsolubleproteincontent，nitratereductsseactivityandrootactivity，andmaintainedthegrowthanddevelopmentofsugarcaneplants．Keywords：sugarcane；nitrogenapplicationmethod；ph
